Turbo Boost Controler and Fuel mixture compensation

I thought I would post this discussion on the Forum prior to presenting it to the Editor.

I have been seeking an inexpensive turbo boost compensation system so I can push ~4-7 lbs of turbo boost through my OEM electronically controlled engines.
2.3 Volkswagen VR6, and 4.0 Jeep I-6

I have found only good things about the link below.
http://www.splitsec.com/products/1.8TBCS/1.8T_BCS.htm

Project cars:
http://www.splitsec.com/spike/jeep/spikejeep.html
http://www.splitsec.com/spike/dodge/spikedakota.html

In theory we can:

-Install a turbo downstream
-Run hard line intake tubing
-Install an additional Injector in the intake runner (provide fuel)
-Install the Boost controller attached to O2 and boost indicator

From my understanding The ECM will not see any issues because the fuel ratios will be compensated for and low level boost #’s  will not require major timing adjustments.  I am expecting the OEM management system to adjust if retarding the timing is required.

Any thoughts would be welcome.

Troy
Austin, TX
(Ex owner 1964 289 C-4 Cruse-O-Matic)  

99Eurovan 1st off welcome to the forum. It seems you could reflash the computers in both. I don't know about the VW but the Jeep can probly be done with a Hypertech or equilivent type of OBII type tuner. Hypertech use to do custom tunners also I had a differant computer in my Dakota with a belt driven blower, they customized one for me, I had to ship it abck to them after doing a re-flash, they took that info & reprogramed it, sent it back to me, re-tune works great. There are some realy good electronics for boost control, ignition timeing &fuel control out there, Maybee Jacobs or a MSD controller, I'm sure it's allready been done.     3836bbl/Budnicks  
"Fill Your Library Before You Fill Your Garage" Good Luck  "Budnicks"

If you're wanting to do all the fuel enrichment through supplemental injection, SDS sells a suitable "extra injector controller" http://www.sdsefi.com/eic.html. Megasquirt systems have also been successfully used to control extra injectors.

You'll probably need some way to retard timing under boost, such as an MDS Universal Boost Timing Master http://www.msdignition.com/Products/RPM/Timing_Controls/Timing_Controls/5462_-_Universal_Boost_Timing_Master.aspx

As for boost control, you could use something as simple as a aquarium tank valve, or a "Granger" valve, or something as complex as a sophisicated electronic boost controller to "condition" the intake manifold pressure signal to the wastegate.  
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460_BBF_Turbo-in-CC (formerly Dr511scj) "This guy has no life other than posting endlessly on carcraft.com." -- Car Craft, July 2005
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October 1, 2003: " I'm thinking a couple of...turbos, blowing through an old Powerstroke intercooler...on a Super Cobra Jet-head 460 would be mad cheap and make sick power."
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"I have no problem with your...talking to several versions of yourself...or pointing out our failure to do a turbo story ...." --Douglas "CC/Rambler" Glad

Thank you for getting this discussion going.

My goal is to understand if an OEM engine management systems can handle boost without requiring modifications.  My thoughts are if I am only adding 2-3 Lbs. of boost the knock sensors will keep the motor from getting damaged.  That is a reactive system not a proactive management so I may be expecting to much from OEM programming.  Does anyone know what the typical timing reduction is for boosted motors?  Is it dependent on boost levels?  

Thank you for the recommendations for waste gate controller.  This is part of my build I need to investigate. I am expecting this to be one of the costly parts of the build.  I know the injector bung will make up for missing fuel but if I cannot control the pressure the drivability of the project is a bust. Can I "dial down" the pressure that a turbo delivers on the cold side or is it a static design that has no adjustment?  

The CarCrafter in me knows my stock transmission, bearings, and rotating assemble can't handle more then 25% increase without wearing out components.

Thanks again for contributing to this projects design
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What is going to help this project along is my purchase of a second VW Eurovan.
I now have a test monkey.  That VR6 van is going to look good on the burnout page.